Magazine screw driver and method of operating same



Jan. 9, 1923..

H. SIMON.

MAGAZINE SCREW DRIVER AND METHOD OF OPERATING SAME.

4 SHEETS-SHEET l- FILED JAN. 20. |922.

VVITNESSES Jan. 9, 19% 1,441,950.

H. SIMON.

MAGAZINE SCREW DRIVER AND METHOD 0F OPERATING SAME.

FlLEn JAN. 20. 1922. I 4 SHEETS-SHEET 2.

III

WITNESSES VATTOR N EY Jan.. 9; 1923.

4 SHEETS-SHEET 3.

H. SIMON.

FILED ,IAN.20, 1922.

AFFOR N EY EYA WITNESSES Jan. 9, 1923. LMLQSM H. SIMON.

.MAGAZINE SCREW DRIVER AND METHOD 0F OPERATING SAME.

FILED JAN.20,1922.

Il I I WITNESSES www ATTORN EY LbsHEETs-SHEET 4.

lltritenterll allena., w1, lllam Application led January 20, 1922. erial No. 530,533.

and lltlethods of Operating Same, of which' simple movement ot the screw driver and without removing1 them lrom the magazine. ln the ordinary magazine screw driver, several blades are carried loosely in the handle, and in order to change the blades, `'it is necesary to remove the cap which closes the end of the handle, take out a blade, insert itA in the chuck, close the chuck and tasten the cap againin place.

'l`he present invention reduces the ninnber ol operations, tor the blades need not be removed except :tor cleaning or grinding. lly a manijimlation oli' the tool in ditlferent directions, different blades are made to move into position in the chuck, where they are seein-ely locked by a slight movement and may be as easily removed.

'l accordancewitli the invention, there if provided a handle et appro] i e sine, `in te which are housed a plurality ot sciew driver blades oi different sizes, or specifically dii :terent capacitieaand so arranged that any chosen one oit the blades may be projected trom the handle or housingrinto position ttor.

l5 use, to the exclusion or the otl'ierlfilades, and the chosen blade is there locked against rctraction by a :torni of clamp or chuelf:n

l have disclosed two ditlerent eniibodiments ot the invention. They di lli'er trom eachother in the method of 'fastening-,1; or holding the blade in projected position. 'l he tundaniental arrangement and operation ot `the tool hele blades horizontal, the top blade will always `the change mechanism is the same in both `terms.

lt consists of shell so constructed to receive three flat blades, and provided with means to hold them against rotary movement while permitting` the blades a definite transverse movement equal to about twice the thickness oi' a single blade. l/Vhen with the dat faces ot the located Acentrally in the shell and then by inn; the tool downwardly, the top blade w l slide through a slot or opening provided in the chuck, where it may be quickly locked in a lirm position. Upon turning; the tool with the dat sides et the blades vertical, the middle blade then assumes a central positin and is brought into action in the same manner.

lt will be noted that when the blade is in its working position, it lined at its base into the handle, the latter taking all the strains while the chuclr merely serves to bold the blades trom moving; out ot position.

The invention will be best understood trom a consideration of the following detailed description, talren in connection with the accompanying drawings forming part of this specification, with the understanding, luiwever, tl at the invention is not conned to any strict conformity with the showing): el' the drawings, but may be changed and modined.l so long' suchchanges and modilioatio-ns mark no material departure trom 85 the salient features of the invention, as expressed in the appended claims.

ln the drawings:

Figure l is an elevation et a screw driver structure embodying the invention, and showing' one ot the blades projecting and clamped; y

lignre f is a longitudinal central section ot the screw driver structure with some parts in elevation, and otherwise corresponding to the shown of Figure l;

fligure 3 is a longitudinalcentral section through the screw driver structure in a plane p gli anglestothe showing` of 2;

Figure fl is a plan view ot one ot the screw driver blades;

Figure 5 is an elevation oit' the changeshell, shown in the structure oli lFig. 2 and associated figures;

Figure 6 is a top vievv of the magazine screw driver of Fig. 1 with the blade in position;

Figure 7 .is a top view of the casing or handle, with the change-shell removed;

vdriver With'the cap removed and the screwdriver' in" a horizontalposition;

"Figure 10 isa top `view ofthe changeyshell; f

Figure 11 is sectionalvievvv ot nor tion of the'liandle Orca-sing;

, Figure ,12vis a sectional vievv of the slid.- alole sleeve-g `Figure 13 is a bottoni ,view of the changesh'ell;

Figure 14 is an elevation oli' a niodied forni of the screwdriver shown-inthe preceding figures;

Figure 15 is a longitudinal section oll the screw driver of Fig l14;

Figure 16 is a longitudinal section at right angles to the showing of Fig. 15;

`Figure I1'? is a plan view of a forni of screw` driver blade which is used with the screv.7 driver shown in Figures 14, 15 and 16;

Figure 1S- is aI longitudinal section throughthe ehai'ige-she-ll-ot Figs. 14 to 27;

Figure 19 is a longitudinal section oli a sleeveeinployed at the outer end of the change-shellshownin Fig. 18;

Figure 2O is atop View` of the forni ol i, lscrew driver structure shovvn in Fig. 14;

Figure 21 is a cross section on the line 21.-21 of Fig. 14;

- Figure 22 is a top plan view ol' the changeshell :shown in Fig. 18

Figure 231s a longltiuhnal section olY the handle Figures 24 `to 'inclusive'are views of detailed portions of the screw driver struc-v ture shown in Figures 14 to 16'.

Referring to the torni oit screw driver illustrated inFigures 1 to 13 inclusive. there is shown a handle or easing 1, of generally cylindrical for-In, and which may besef rela tively small size7 and is usually drawn or :turned from metal of convenient. size to be held in the hand and to contain e, plurality of screw driverhlades 2, also formed of y portion :contracted .at itsf front end .toform a nek' 35 and terminatmgan a .short .Straight annular llange 4, smaller in diameter than the body portion. The other end of the casing is internally threaded to receive a. threaded cap 14, which closes the lower end oil: the handle. In the .flange 4 are torn'ied a pair of slots 21", dianietrically disposed. and at right angles thereto are another pair of slots 21 which are deeper and wider than the slots Q1" `for they extend into the noch il (Figs. 7 and 11). The slots 21 receive the Wide end ol the blade when the latter is locked in position (Fig. 2).

A rotatable and longitudinally slidable sleeve 5 is located at the ["ront end of the handle, into which there is screwed or oher- Wise secured, a chuck 6. having a terminal transverse slot '7 therethrough. said slot hcing ol' a length and diameter to allow a .single blade to pass. The chuck is exteriorly milled asshown at S, to provide a convenient finger hold. whereby the chuck niay he rotated when necessary.

ln order to facilitate the handling of the screw driver assembly. the exterior surlare thereof may be inilled or roughened. as shown at 15, 16 and 17., to improve the grip on the exterior surface olY the device.

(larried bv and movable with the sleeve 5 is the upper or outer end olE an elongated ychange-Shell 9. to which it is secured h r scrmv-threads. The change-shcll is of gein orally c vliinlrical torni, enlarging in diario. tertou'ard the lower or roar end. and .stop-` ping short of the interior o .t the shell or casing` 1`r u'here the change-shell Sl cari-ics :inother sleeve 11. reaehiinll close to the bottoni oie. the casing il. said sleeve 11 being` provided vwith a narronv transverse liar 12. dianietric of said sleeve 11. which latter terminates at its upper end within the casing 1 in an outstanding` circumferential flange 1?). between which and the upper conical portion $3 ol the casing. there is lodged a coiled spring 14, tending to urge thc change-shell ion'ard the 'bottoni ol: thc casino' l. rlhc sleeve ll is flattened on opposite sides at its lon'cr ond. as indicated at 11". The bar 12 connects the flat sides as shown in Fig. 13. As the sleeve 11 is connected to the change-shell Sl. this imparts to tlu` sleeve a spring); action in harmony with llic changcfshcll. a rcsull. the-sleeve 5. changesliell il and lower :dccvc 11 are caused to inove in unison. 'l`hc change-shell contains the means `For conm lllii l L'O liti ` slots 2l allow the said `end to pass pulling the sleeve 5 outwardly against the `the ` locked therewith.

ine-neto i (We im@ ll), S that when a screw driver blade 2 is moved outwardly, the expanded end 118 ol" the Vlxlades, passes through the "slot-i` 2O ot the change-shell end enters the enlarged or bell-shaped lovvcr end 2l ot the sleeve und the :lower end ot the projccted screw driver blade will lirst` engage the slots 2l. `llhough the neclr'portion 3 is iifnroivei" than the `end of the blade, the out.` By

"tension oil the spring lll: and then turning;

the sleeve 5, 1which causes the changeshell to turn and likewisev turns the blades, the lower end of the blade is thereb7 freed troni slots 2l and rides upon the 'llangge 4 oif the casing1 l.. until the shallow recesses 2l.h are reached, then the sleeve released. end the lower` end of the projected blade becomes locked in the recesses 52,1". llt is so held by the sleeve 5 engaging the expanded end 18 of the butt end oiL the blade. The other screw driver blades are housed in the handle l, and have the recesses l() at their rear ends engaging the bar lf2 and interln order to facilitate the positioning' or indexing oit the blades 2l so that 'they may be in 'operly proji-icted :is desired, theblades and the sleeve are provided with coacting' indicia 52h {S-31 eech blade being given a different number, thereby indicatingto the user Which blade will be nioved into positionby gravity end locked for use.

rlhe ineens :li r determining` the movements ot the blades are loceted at the ends of the change-shell. At the upper end oli the change-shell there is a web 22, haring; an oiienine; 22 therethrough ot partiell;7 circular and partiallj,7 rectafinpgnlar outline.

` lhis o )onineniavbe described in .two warfs To f 7 either as circular with straightsided notches il'orined on opin`\-site sidesj or as 'rectangular with curved recesses :it opposite sides, rlhese notches tare wide enough. to permit the ont sidebladcs to lie l osely in theni. Ilhe distzinijefbetiveen the straight sides ot the notches is a tril'le over live times the thicknessol a blede (Fig: d). 'lhe distance between the centers ot the curved sides is :i le more than the Width of the shank o'l a blade, l

rlhe 4dattencd,sides ll" at the other end the changeshell ere alined with the straight sides of o o pening oil the web te?, (Figs. 9 and l'), sudare the saine die tence eport, viz: about :live tin: ,s the thickness of a screw driver blade lhc proportioirf: ot the elialnre-sliell and the blades are such that when the screw driver is in a horiiiontal position, 'with the ilot sides ot the blades also assuming e` hori* mental poeitiony blades Will lie one on top of the otherD with thc limcrinost blade at the lfoi'n'ard end lli/*ing dat on one oil' the straight sides olf the peculiarly shaped open ing,- Q2@ provided in the `web Qin ainl at the rear end the lowerinost blade rests shown in lliguretl, and at their rear ends the position as indicated in Figure 9. The blades will not touch any other portions of the shell l `a'rei-i`ilt oi tiis orraine'einentvq the up permost blade ot the three Will be arranged in the longitudinal center and in alinonient with the oi'yeninp,` olii the chuck d, tor the distance between` the flat of? the openingi` 22 isj as before stated, substantially lire times the thickness oli the single blade (Firrnre t3) L lin this positionj the uppermost blade 1will also be elined with the slots 20 ot thc changoshell, so that when the tool tilted downwardly to cause the forward ond ol. the blade to slide outwardly by egjifeiif'itm through the opening ot the chuck, its enlarged end will easily pass throi'lgh the slots 2l) With- 4ont tmichiin the sidesu reversing; the

position oi'v tie tool so :is to conse the other end blade to assume the iipperinost positioin that blade may be projected trein the tool in the saine manner. lt it be desired to project the cent-rel blade of the three the tool is i fen a quei-ter tnrrn so as to bring.; the straight sides of he opening1 ik?? in zilinen'ient with the stra l L portion et the other end ol the shell and .in o vertical positionn whereupon the trent ond oli the central blade Will drop to the loweid: point out the. curved portions oil: the opening 22"@ while the rear ends oli :ill three lilznlor-i will hang onto the bar l2 with tl'ieir renters olf trevity so placed inertically;7 verlicel (Fig. 8H). ills the control blade is also the one having thewidest and also the heaviest t ont end, there will be a delcrinxiinzition` o* the point ot tl blade toward the center o!" the tooby While the rcen end is only the width ot a blade out oit center and is 'llico to a nunc a control position` :is the cei il bl; slides out fardl'v tbrmipb the opei'iini proviiiled in h chu l y the onlinr end olf the blade ein ,0 oi" the change-shell,

a substantially vert-ical position when the central blade is to be withdranui.

In assemblingthe screw driver structure, the change-shell 9 with its sleeve vll is first inserted into the handle or casing. rlChen thev cap 5 is screwed onto the change-shell,

the chuck 6 being removed. The blades are then dropped lsingly into the magazine. The widest blade is putin the center. They are then given half a turn and on sliding back are alined on the bar l2. The chuck G is then screwed into the upper end of the sleeve 5, with the. slot 'l' of the chuck located at right angles to the length o'lthe transverse bar 12. By giving it a halt turn when the blades are all in the magazine, they are locked in and cannot possibly escape until the chuck is again turned so as to bring` its opening into alinement therewith. The sleeve 5 may then be turned so as to carry the slots 2O ot. the change-shell and the slots 2l of the handle ont ol" alinement, thereby closing the tool completely and p eventing the ingress of foreign matter. The blades are numbered l, 2, 3, and the chuck 6 and the sleeve 5 have numbers at points corre- Y spondingto the location of the blades within the shell, thereby making it possible to determine instantly which blade will issue from the shell when the tool is manipula-ted.

In using the screw driver, and assuming that it be desired to have the central blade projected, the chuclfG is moved until the mark thereon coincides with the mark and number on the sleeve 5, whereupon the sleeve is rotated to turn the change-shell until the slots 20 in the change-shell coincide with the slots 21 in the easing or handle. rl`he tool is then moved untilthe desired number on the sleeve 5 is straight up and is then tilted head down, when the desired blade slides out through the chuck. rlhe sleeve 5 is then pulled out liar enough to bring the end olf the blade clear of the handle and then given a half turi'nwhen the basic end oit the blade will become firmly seated in the slots 211 in the handle. rlhe pressure et the spring lll keeps the bla-de firmly in position, and the action ot working the screw driver can only serve to press the blade still harder into the slots 2lb, making it impossible for the blade to turn or slip in the handle.

`Vlhen it is desired to replace an already projected and locled blade, the sleeve 5 and handle or casing l are drawn apart lengthwise until the expanded end ld or' the al ready projected blade is moved out ot the recesses 2l, and the sleeve 5 and' changes iell Sl, being now unlocked, may be rotated about the longitudinal ai' s o'l' the screw driver structure until the projected blade has its but-t end in coincidence with the recesses 2l,

j and the blade, being located with its butt end lowermost, gravitates bach into the change ment by the already retracted blades on either side olf it.

ln Figs. let to 27 inclusive, there is shown another form olf the invention operating on the same general principle olf positioning and changing the blades as the structure ol" the preceding ligures, but dill'ering in the method ol holding blades. Instead oil' the blade when in use being set in the body of the screw driver, it held against turning by the chuck itself. ln the structure of Fig. la and associated lig-ares, there a casing or handle 23 which takes the place of the casing l in l l and associated ligurcs. This casing 23 is a one-piece structure con taining a closure with inleriorly thickened walls 211i, and a closed bottom 25, while the end oit the casing or body member remote from the bottom 25 is 'lormed with a cavity 26, interiorly enlarged to house a spring 27.

The spring 2'" receives` and supports a sleeve 2S capable ot movement lengtlnvise of the handle portion ot the structure` so that the sleeve 28 may be forcibly moved to an extent into the handle in opposition to the tendency of the spring 27.

lllithin the sleeve 28 there is located a taper bloclr 2f) expanding toward the top and tapered outwardly and fitting the upper end or the sleeve 2S snugly. Formed in one piece with the block 2S), is a change-shell il() (sec Fig. 18) which may be of cyliiulrical contour to a point near the bottom olf the handle rlhe shell 30 is made of metal and is provided from the lower end oli the block for a distance into the shell 30 with slits ill. (,)ue side or' the split block 29 is pierced by a pin 32, capable of being forced for a distance inte an enlarged continuation 231:3 ol? the slit 3l, so that the pin 32 may enter or seat in a hole 35 in the screw driver blade, which at the time is held in the block 29 by the clamping action ol? the latter.

The blade is shown in .l1`ig. l'T as having an enlarged basicI end llf, w ith a central notch 35 at said basic end to permit those blades which are not in projective position to straddle a transverse bar 3G in the hottom et a lining member 37 lodged in the change-shell 30. Y

The screw driver blades indicated al 38, in Figs. lll, l5, 16 and f1.7, are in the nlaiu similar to the showing of Figs. l, 2. 3 and d, and are or may be, three in number aln though not necessarily conlined to such particular number, and these blades are housed in the change-shell, with all the blades bcing` projected through a ring 30 of combined circular and rectangular form, similar to the web 22, shown in Figures l to ll?) inclusive and having the same functions.

The bar 36 rises 'from a plate l0, which rests on the bottom 25 of the casingv24, and this plate 40 is Secured in the casing 23 by lll eri seated. i

namento` saine n'ianner in the :l'iist term ot the inve "on, `it being notcifl in this connection that the opening1 defined by the ring of lligures lll to 27 inclusive corresponds with the opi-innig` defined b theiveb 22 el Figures ll to lil inclusive, While the slot 'i' in the chuck G ot the last mentioned ligures corresponds i with tlieshepe oit the openingu in the block 29.

ln order to release the desired tool', the sleeve is pulled back slightly., cauisin,y the clinch 29 to open and allow the blade to slide out. @n releashiig the sleeve E28, the chuelr jaws close, the-phi il@ seating; in the hole 25 provided in the blade ehan i. ils the sleeve all is under const-a' 2L ure against the chuck iathere is no possibility olf the blade slip) when it has once been prop- .lo receive the blade into the magasine, the

lool is slightly tilted baclrwardly, the sleeve y l5 pulled down, and the blade given a `slight twist to 'unseat itilroni the pin $52, when it `will slide baul: into the magazine. Upon i ne' the sleeve 9M, the chuck jaws close until the sides ot the slot 2l?) meet. llillien this occurs, it impossible `toi' a blade to pai-is and the blades become securelylocked iu the maujazine. i i i lu the Aform shown in llgiuies l to 13 inclusive, the "sleeve 5 has to be moved longitiulinally against the action ot the spring anditlien turned,Whereas in the form shown ieiires 14tto 27 inclusive, the sleeve 28 only has a sliilable movement, which movement is, luinvevei', necassary in order to` re lease the bloeit 29, which in effect constitutes a clinch. 'lroin` its en gagenient ivith the blade.

'l'lie alflvantag'es olf this tool may i be siumiied up as follovvs. 'A great: deal of time is saved over the operation of the ordinary niaiianine screw driver. Theloss o'liblades, a i-.biiunon trouble with such tools, is abso# lil-teli,Y avoiiileib llhe construction is exceed-y in lily simple and without any delicate parts which would belilrely to cause trouble. rlhe blades" e held absolutely rigidly, andivithout any di oli slippingT or turning. rlhe size oi the tiel is not increased beyond that oil' the ordinary magazine screw driver, the n'eiu'ht is the saine, and the conveniences of Alhetool will cominend'it to the public.

lily the employment ol gravity tor indexinii' oositioning and selectingm the blades `ini stead of a movable mechanism, a construction has been rendered possible Vwhich permits the blades to extend i practically `throughout the entire length olf the screw driver. 'lhis also renders possible the large size and Width oit blades in proportion to the handle, which would be impossible in mechanisms requiring additional moveable parts in order to index or position the blades.

lllf'hat is claimed is :fl y i l. Ai magazine tool coinprising,h a magazine shell, a plurality of blades Within the l shell but unattached thereto, a chucl communicating' with the shell `througili an Jopenf ing which adapted to pass but one blade at atiine, saidchuck being adapted to clamp the blades suigly when projected, said blades being.;` :li'ee to move Within the shell longitudinaliy and laterally in either of tivo transverse directions in response to gravity as the position ot the tool may be changed, and

means Within the shell for restricting;` the movements by gravity of the blades to cause a selected one ol the blades to aline with sai d opening` :in the chuck. 1 i

A magazine tool comprising` a niagazine, plui .'ty olf blades housedtherein but unattached thereto andv tree to mov-e 'within the magazine longitudinally and laterally in either o'l tivo transverse direc-` tions in response to gravity as the position o'l` the tool may be changed, a chuck com- `ninnicatingi' withthe magg-amine through an opeiiiniii which is adapted to permit the passage ot one blade at a time, said chuck being' adapted to clamp the blade 'when projected, means within saidinagazine ilor restricting` such movements by gravityol the blades to a transverse inovei'nent to" aline a seleizted blade `with said opening oi: the' chuck, and a longitudinal movement to `cause the se lected blade `to issue lli-om the magazine in a position to be clamped by the chucln Z13. A, magazine tool comprising a malgaeine, a plurality olf blades 'free to move Within the magazine both longitudinally and transvcrsel),7 in respoi'ise to gravity as" the position of the tool may be changed, a chucl communicating 'with `the magasine through an opening which is adapted to permit the passage oi one blade ata time, meansfivithin said magazine lor restricting," such i giiavity movements of the blades to a transverse bodily movement oi' the blades with causing the alinement et the selected blade with said opcniiig, the selected blade being,`

then aerniitted lonoitudinal movement throuoh said o venres to an eneangino nosit* n u: nf c; l

tion 'with said chuck.

Il. A mag'auinetool. comprisia a maga zine, a plurality of blades theirI ii, a chuck .communicating with one end or' the magazine through an openingwhich permits the I passage of but` one blade; at a time, and

means Within the magazine whereby upon turning the same the blades are caused to ymove bodily Within the handle transversely and lie oney upon the `other so as to bring either end blade into alinement with the said opening, or'upon 'further turning movement ofthe magazine the blades are caused togassume a position'side-by side, the middle blade, then alining with said opening, the actual discharge oit the selected blade from the magazine being effected by the tilting oi.I

the tool. f

5. A magazine tool comprising a magazine,.a` plurality ofy loose blades therein, a

'chuck communicating' with one end ot the magazinethrough an opening which perf mits the passage ot but one blade at a time,

saidmagazine having means to restrict the blades to tWo transverse bodily movements of all the blades and the longitudinal movement o'fvone of the blades, the transverse movements being followedto `select one ot the blades Aand bring it. into alineinent with y the said opening, andthe longitudinal movement `permitting the seleted blade` to pass through said openinginto clamping position for the chuck. a

6. In a. multiplev tool comprising a magazine shell, and a chuck opening into the kmagazine and adapted to clamp one blade at a time,;a plurality oit blades tree to execute movements Withinithe shell-longitudinally and vlaterally in either of tvvo transverse directions in response to gravity, and

means Within the magazine for confining saidmovements tov compel a selected blade to aline with the chuck opening at the option of the operator.

, 7. 'A multiple tool comprising `a magazinehandle, chuck having an opening for holding one blade at atime and connecting with thehandle, a plurality of blades housedV Within the handle, and means 'for simultaneously alining a blade selected for use with the opening in the chuck and freeing said tool ready f'for issuance into the chuck, through the application of ing'the tool as a Whole.

S. In a'holloW-handled tool, a plurality oli' blades normally housed in the handle and capable of simultaneous transverse and lat- :eral movements' in the tool, and relatively gravity on turnlapping at their outer ends within the magazine. the inner end oi the blade thus clamped.

10. In a magazine tool. containing a plu` rality of blades, relatively fixed means Within the magazine by which any blade can be selectively positioned for issuance into the working position, a chucking mechanism adapted to clamp the blade chosen ttor use. and means for simultaneously7 retaining the outer ends of the remaining blades within the area of the butt end of the blade in use.

11. In a multiple tool, a. hollow handle, a magazine shell containing a plurality ot blades, said shell being slidable and rotatable in the handle, means for imparting spring pressure to the shell, means permitting the selection and projection of any one of said blades into the working position or its retraction, and means tor clamping it in the working position by sliding and turn ing the magazine shell.

l2. In a hollow handled tool, a plurality oi `blades housed in the handle, said handle having means to permit coordinated transverse movements ot all the blades therein through the torce of gravity to selectively position one oi the blades for projection from the tool, said handle having an opening at the forward end to pass the working end of the chosen blade into position i'or projection, and means for clamping the projected blade against retraction.

13. In a multi-bladed tool, u hollow handle, three overlying loose flat tool blades normally housed in the handle, said handle having means to permit a combined and simultaneous movement transverse of said blades in said handle equal to several times the thickness of a blade to register a chosen one of the blades With the longitudinal eenter line of the handle, and the hollow handle having a forward passage for issuing the registered blade into the projected position when the handle is tipped downwardly, and means for clamping the projected blade against retraction.

14. In a magazine tool, a hollow handle having an opening through it at the tor- Ward end and ol a capacity to receive a plurality of entirely unattached tool blades housed Within the magazine, and means associated With the handle to allow the blades to be selectively positioned one at a time b v the action of gravity in the longitudinal center line of the tool and subserpiently projected from the handle, said means including devices cooperating with the chosen blade 'for locking said blade in the projected position.

l5. In a magazine tool, a hollow handle` :i plurality of entirely unattached tint blades normally housed in the handle, said handle having an opening through its forward end topass one blade at a time, the handle being of a length substantially that of a blade,

25. In a multi-bladed tool, a 'hollow handle, a changesshell contained within the handle, a plurality of loose blades mounted within the change-shell, means cooperating` "with the inner ends of the blades to interlock the same with the shange-shell, whereby the blades are held from turning` movement and arepermitted to move bodily transversely within the handle, means at the forward end of the change-shell providing a contracted passage for the outer ends of the blades, a chuck having an opening through which a chosen blade may be passed, said chosen blade being held in projected relation with its inner end within the changeshell fitted between the outer ends of the two adjacent blades and guided thereby into its retracted position.v

'26. ln a! multi-bladed tool, a hollow handle, a change-shell within the same, said change-shell having its diameter contracted in one direction at the inner end, a plurality of loose blades contained within the changcshell, means foi-holding the blades from rotation within the change-shell, but permitting the simultaneous lateral movement of all the blades therein, means at the forward end of thev change-shell for reducing the diameter thereof at that end in coincidence with 'the said contractionof the inner end, the blades when in their retracted position projecting beyond the last-mentioned means, a chuck provided with an opening to allow for the projection of a single (blade, and means connected with the chuck for 'locking the blade in its projected position.

2?, AThe combination with a hollow handle or easing open its front end, ot a change shell within the handle, loose blades within the change shell, fixed means carried by the change shell to adjustjthe forward `ends of the blades so that at least one of the blades will be in alinement with the longitudinal central line of the tool, means at the rear end of the casing or hande to correspondingly adjust the rear ends of said blades, and a clamping vmechanism associated with the casing or handle, said clamping mechanism having anopening of a size "to permit the passage of a single blade into clamping relation.

28.."llhe combination with a hollow handle or casing open at its front end, a clamping mechanism at said end of the handle or casing having an opening o'l. a size to allow for the passage and the clamping of a single blade, a change shell within the casing or handle, a plurailt;7 of loose blades within the change shell projecting at their forward ends beyond the latter, means provided at the forward end of the change shell to adjust the forward ends oi' the blades so that at least one of the blades will be in alinement with the opening in the clamping mechanism, and means at the rear end of the handle or casing(T to correspondingly adjust the rear ends of the blades.

29. The combination with a hollow casing or handle, a chuck at one end ot said casing or handle having an opening to permit the passage and the clamping ot a single blade, achange shell within the casing or handle, a plurality of loose blades within the change shell, each blade being provided with a slot at the butt end, a cross bar at the innuer end of the casing or handle to engage the slots atthe butt ends of the blades, and means within the casing or handle to adjust the blades so that at least one of the blades will be in alinement with the opening in the chuck.

BO. The combination with a hollow casing,r or handle open at its front end, of a change shell within the casing or handle. means within the change shell at the forward end to provide for the passage oi the forward ends of the blades, said means consisting oli an opening which is widened in two transverse directions, means at the inner end of the handle or casing to adjust the rear ends of the blades coincidently with their forward ends, and a chuck :for holding the selected blade in its extended position.

31. The combination with a hollow easing or handle open at the front end, of a change shell within the same, a. plurality of loose blades within the change shell, the forward endv of the change shell being provided with an opening which is widened in two transverse directions for the passage of the front ends ol the blades, means at the inner end o lt the casing or handle to adjust the inner ends oi' the blades coincidently with the walls` of said opening, and a clamping- .mechanism at the outer end of the tool havingr an opening of a size to permit the passage and the clamping of a single blade.

32. The combination with a hollow casing or handle open at the front end, ot a change-shell within the ca sing or handle and projecting at its front end beyond the same, a sleeve surrounding the change-shellv at its front end, a spring interposed between (he change-shell and the casing or handle, a series of loose blades contained within the change-shell, means at the inner end of the changeshell to prevent the turning of thc blades, means at the front end of the changeh shell having an opening` with two straight sides and two curved sides for the passage of the front ends of the blades, a. chuck at the outer end of the tool bevond the last mentioned means, said chuck having a slot of a size to permit the passage olE a single blade, and means at the inner end of the shell to aline the blades with the straight sides of said opening.

The combination with a hollow handle or casing open at its iront end and provided at said end with two pairs of' slots,

iaiainao one pair being; arianged at night angles to the other pair and being wider and longer than said othei` pair, oir a ehangeehell located Within the easing oi handle and extending beyond the front end of the latter, said shell. being provided at its front end with an opening which has two straight sides and two Curved sides, and having longgitudinal slots in its Walls, a plurality of loose blades adapted to he inserted and held Within the change-shell, said blades having' their butt ends expanded and pi'ovided with aslot, a cross bar at the inner end oi the change-shell to fit in the slots of said hados,

ineans at the inner end of said Change-shell 1 adjacent said cross bai' to contract the diainetei1 of said change-shell, a longitudinally adjustable sleeve connected to the outein end of the Changeshell and cooperating to hold the hatt end ot one ot the blades in one pair of said notches, and a chuck engaged With said sleeve and pio'vided with an opening il'oi the passage of a single blade.

ln testimony that l claim the 'foregoing as my own, l have hefeto aixed my signature.

HENRY SEMUN; 

